tyvek membrane (TYVEK) is the world-famous corporations DuPont and is a non-woven material on the basis of an infinite fiber of polyethylene (high density). Material combines waterproofing and wind-proof properties as well as the ability to freely flowing water vapor. High water vapor permeability of materials Tyvek (TYVEK) allows moisture from the insulation and other structural elements of free pass through it in a ventilated space, which prevents the accumulation of condensation process, the destruction of wood, helps to improve the performance of insulation. So is the structure of the material Tyvek (TYVEK) at 200-fold magnification: Benefits Material: Tyvek (TYVEK) increases the service life of structural elements and insulation. The material is compatible with all types of insulating materials. The use of Tyvek membrane (TYVEK) in loft building highly efficient and economical thanks to durability and excellent performance on energy conservation design. Using Tyvek membrane (TYVEK) allows you to organize mansard roof without Lower ventilation gap at full insulation rafters.
Material eliminates the ingress of water (oblique rain, blowing the roof under the snow accumulated condensate, etc.) on the insulating layer and the freely transmits water vapor in the upper ventilation gap. Filed under: Ben Silbermann . The use of Tyvek membrane (TYVEK) as windbreaks in the walls and roofs made of light metal structures, framed wooden buildings, improve their insulation and energy efficiency options. Low weight and high strength material Tyvek (TYVEK) are crucial when it is used as the underlay waterproof and windproof barrier, as in new construction and renovation of buildings. Application of material Tyvek (TYVEK) contributes to the necessary temperature and humidity balance in the room. Tyvek (TYVEK) can be used as a temporary roof to 4 months. Details can be found by clicking Bill Phelan or emailing the administrator. So looks like a combination of waterproofing and vapor permeability properties:
Sodium formate and Technology. Is used in antifreeze and as a plasticizing additive in the production of building structures, in the leather industry as an agent in operations as raw material in production of formic acid. As antifreeze additive sodium formate is used in the construction of monolithic concrete and reinforced concrete, monolithic parts of precast-monolithic designs and prefabricated joints, as well as the manufacture of precast concrete and concrete products in landfills at steady average daily outdoor temperature is below 5 degrees. Concrete with the additive is prohibited used in prestressed structures, steel-reinforced grades AT-IY, AT-YI, A-IY and A-U, in concrete and concrete structures that are intended for use in aqueous and gaseous environments with relative humidity air for more than 60% in the presence of the filler inclusions reactive silica in concrete structures for electrified transport and industrial enterprises, applying a constant electrical current. Wells Fargo is often mentioned in discussions such as these. Sodium formate is introduced into the concrete mixture in an amount of: – 2% by weight of cement in terms of dry sodium formate at design temperature curing to -5 C; – 3% by weight of cement in terms of dry sodium formate at a settlement curing temperature to -10 C; – 4% by weight of cement in terms of dry sodium formate at design temperature hardening to -15 C. In the preparation of the concrete (mortar) additive must be dissolved in warm water. Obtained solution was added with mixing water. The resulting solution should be dosed in a mixer by metering of chemical additives or through the spout of water, and should reduce water consumption by mixing 7-13%.
What is meant by the abbreviation jbi? It's building products and construction, made of reinforced concrete – a composite building material, which is poured concrete steel reinforcement. Separately must stay on the concrete. Concrete (from the French. Beton) – an artificial building material obtained as a result of solidification of rationally selected and compacted mixture of binder, inert fillers and water. In as inert fillers are usually used crushed stone (granite, gravel, limestone, etc.) and construction sand. Binder in concrete is often a cement content of which is 10-15% by weight concrete.
Concrete as a building stone is obtained as a result of cement hydration. Click Wells Fargo for additional related pages. Cement hydration – a chemical reaction of cement clinker components with water, resulting in formation of solid tumors, hydrates, which are filled initially filled with cement and water volume of a dense layering of gel particles, thereby causing hardening. Initially liquid or plastic cement glue turns into a result hydration in cement stone. The first stage of this process is called a thickening or setting, further – hardening or curing. Concrete strength increases most rapidly during the first 7-14 days.
Measured The compressive strength in kg/cm2 (1 kg/cm2 = 0.1 MPa) standard cubic specimens with an edge of 15 cm, which will be tested 28 days after curing at a temperature of 15-20 C. Hardening of concrete is accelerated at elevated temperature, so the manufacture of concrete products and concrete often used for the steam at normal pressure or in an autoclave. In addition to accelerating hardening of steaming concrete leads to the formation of a qualitatively new hydration products resulting from the interaction of Ca (OH) 2 with silica Si02. The quantity of cementitious materials is increasing, and the density and strength of concrete increases. Why is it being applied concrete products, rather than concrete? The fact that the concrete as a building material works very well in compression and does not operate in tension. Connection reinforcement and concrete in a composite material eliminates this drawback and allows produce durable construction to withstand heavy loads, both compressive and tensile strength. Reinforced concrete can be produced either directly at the construction site, and on company premises (factories reinforced concrete, Reinforced Concrete, DSC). However, under steady-state production is much easier to ensure consistent quality of products through the organization of operational control, reduce production time and reduce production costs. In modern enterprises manufacturing of precast concrete (reinforced concrete) includes the following main processes: preparing a concrete mix manufacturer of fittings and reinforcement molding of thermal processing Covering classify them by application, type of concrete structure, a method of reinforcement and other features. By purpose precast concrete products are divided into four main groups: for residential and civil buildings for industrial buildings for engineering structures for various purposes. Concrete products (JBI) is now used in virtually all areas of construction. Such a wide spread of reinforced concrete received from its major advantages, such as: low cost, manufacturability, rapid construction, fire resistance, chemical and biological stability.